Recobrimento radicular com matriz de colágeno suíno associado ao uso de plasma rico em fibrina: série de casos

Abstract

The aim of this case report was evaluated the effectiveness of the collagen matrix (CM) associated with platelet-rich fibrin (PRF) membrane in the treatment of Miller's Class I and II gingival. Ten non-smoker, systemically healthy patients that presented one site with Miller Class I and II gingival recession in the maxilla were included in this case report. Four gingival recession were treated with Conventional Coronally Advanced Flap (CCAF) and 6 gingival recessions were treated with a Modified Coronally Advanced Tunnel (MCAT) technique. In both techniques, the PRF was immobilized above the CM. The clinical measurements including gingival recession depth (GRD), pocket probing depth (PPD), keratinized tissue width (KTW) and gingival thickness (GT) were performed at baseline, 1, 3, 6 and 12 months of follow up. A significant reduction in the GRD and PPD resulting in complete root coverage in all gingival recessions after 1 month. However, a displacement of the marginal gingival was associated with a GT reduction was observed after 12 months. The KTW gain obtained with the surgical procedure was maintained after 12 months. Comparing the CCAF and MCAT technique, a significant higher increase in the KTW was observed in the CCAF group in comparison to MCAT technique in all analyzed periods. In conclusion, the association of the CM and PRF membranes for the treatment of the Milller´s class I and II gingival recession was effective in the gingival recession coverage. However, the additional effect of PRF use is still unknown.